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(Pl. III., figs. 8-8b.)



Shell oblong, oblique, narrow above, rather convex, thin, white; anterior side more curved than the posterior; ventral margin arcuate, curving obliquely upwards behind; surface ornamented with 30-35 fine ribs, which are very finely scaled by being crossed by the lines of growth (fig. 8b); the ribs are rather broader than the inter­vening grooves, and do not occur on the auricles, which are only sculptured with the incremental striæ; the scales are very close-set, and only very little elevated; interior of the valves radiately sulcate, slightly denticulate along the lower margin; umbones central, a little prominent above the ligamental area, which is very narrow diamond-shaped.


Length, 27.5 millim.; height, 35; diam., 20.


Winter Quarters, various dates, 10-130 fathoms, also off Coulman Island, 100 fathoms.


Allied to Lima pygmæa Philippi, but much larger, of a rather different form, being broader beneath and much more contracted above. The ribs, also, in the present species are broader and much more beautifully squamate.”



(Smith, 1907: 6)


Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© National Museum of Natural History, Smithsonian Institution

Source: Antarctic Invertebrates Website (NMNH)

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